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CVE-2018-2779

18
FAUCET Score

CVE-2018-2779 is a denial-of-service vulnerability affecting Oracle MySQL Server versions 5.7.21 and prior, specifically within the Optimizer subcomponent. This easily exploitable flaw allows a high-privileged attacker with network access to repeatedly crash the MySQL Server, leading to a complete denial of service. With a CVSS 3.0 Base Score of 4.9 (Medium), its primary impact is on availability. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
>= 5.7.0, <= 5.7.21CPE matchmatch criteria
cpe:2.3:a:oracle:mysql:*:*:*:*:*:*:*:*
14.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
16.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
17.10CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

4.9MEDIUM

CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.2
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.86%
Probability of exploitation in next 30 days
EPSS Percentile
85.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0286 is in the 95th percentile among its peer group of 3,563 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (8)

oraclepatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 6Fixed in: rh-mysql57-mysql-0:5.7.24-2.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 6.7 EUSFixed in: rh-mysql57-mysql-0:5.7.24-2.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7Fixed in: rh-mysql57-mysql-0:5.7.24-1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.3 EUSFixed in: rh-mysql57-mysql-0:5.7.24-1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.4 EUSFixed in: rh-mysql57-mysql-0:5.7.24-1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.5 EUSFixed in: rh-mysql57-mysql-0:5.7.24-1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUSFixed in: rh-mysql57-mysql-0:5.7.24-1.el7
View patch

Vendor Advisories (1)

redhatCVE-2018-2779Moderate

mysql: Server: Optimizer unspecified vulnerability (CPU Apr 2018)

Apr 17, 2018

References

access.redhat.com / errata/RHSA-2018:3655
security.netapp.com / advisory/ntap-20180419-0002
Third Party Advisory
usn.ubuntu.com / 3629-1
Third Party Advisory
usn.ubuntu.com / 3629-3
oracle.com / technetwork/security-advisory/cpuapr2018-3678067.html
PatchVendor Advisory
securityfocus.com / bid/103787
Third Party AdvisoryVDB Entry
securitytracker.com / id/1040698
Third Party AdvisoryVDB Entry